diff options
| author | Mauro Carvalho Chehab <mchehab+huawei@kernel.org> | 2021-04-23 17:19:18 +0200 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2021-07-14 16:55:49 +0200 |
| commit | b980385a70ea3443a6a7a2bb7d5be0f315f155e3 (patch) | |
| tree | 77240a4ee2a027cc3407e5e4dcce57a428258ce9 | |
| parent | a8b1889cd618a58bb57cf1ff7ace41d142520872 (diff) | |
media: exynos-gsc: fix pm_runtime_get_sync() usage count
[ Upstream commit 59087b66ea6730c130c57d23bd9fd139b78c1ba5 ]
The pm_runtime_get_sync() internally increments the
dev->power.usage_count without decrementing it, even on errors.
Replace it by the new pm_runtime_resume_and_get(), introduced by:
commit dd8088d5a896 ("PM: runtime: Add pm_runtime_resume_and_get to deal with usage counter")
in order to properly decrement the usage counter, avoiding
a potential PM usage counter leak.
As a bonus, as pm_runtime_get_sync() always return 0 on
success, the logic can be simplified.
Reviewed-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Reviewed-by: Sylwester Nawrocki <s.nawrocki@samsung.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
| -rw-r--r-- | drivers/media/platform/exynos-gsc/gsc-m2m.c | 4 |
1 files changed, 1 insertions, 3 deletions
diff --git a/drivers/media/platform/exynos-gsc/gsc-m2m.c b/drivers/media/platform/exynos-gsc/gsc-m2m.c index 27a3c92c73bc..f1cf847d1cc2 100644 --- a/drivers/media/platform/exynos-gsc/gsc-m2m.c +++ b/drivers/media/platform/exynos-gsc/gsc-m2m.c @@ -56,10 +56,8 @@ static void __gsc_m2m_job_abort(struct gsc_ctx *ctx) static int gsc_m2m_start_streaming(struct vb2_queue *q, unsigned int count) { struct gsc_ctx *ctx = q->drv_priv; - int ret; - ret = pm_runtime_get_sync(&ctx->gsc_dev->pdev->dev); - return ret > 0 ? 0 : ret; + return pm_runtime_resume_and_get(&ctx->gsc_dev->pdev->dev); } static void __gsc_m2m_cleanup_queue(struct gsc_ctx *ctx) |